Ameri-King AK-950 Series - Post Installation Test; Pre Installation Tests

INSTALLATION AND OPERATION MANUAL, MODEL AK-960
GPS 1 NAV SWITCHING & ANNUNCIATOR PANEL
2.4 POST INSTALLATION TEST
2.4.1
2.4.2
After completing the mechanical installation, the following Post
Installation Function Tests must be performed.
PRE INSTALLATION TESTS
With the AK-950 disconnected, turn on the avionics master
switch and verity that the aircraft power of 14 1 28 Vdc are
on
Connecter Pin 78 (Annunciator Power). Using an Ohm
Meter, verity that Pin 40 is aircraft ground.
OPERATING INSTRUCTIONS
Refer to GPS Manufacturer's Installation Manual for complete
GPS System Operating Instructions. The following paragraphs
described Lamp BRT
1 DIM 1 Test and GPS 1 NAV Switching
functions or:rly.
2.4.2.1 OPERATING INSTRUCTIONS FOR MODEL AK-950
Turn off the avionics master switch and connect the mating
connector to the AK-950. Turn on the avionics master switch
and the AK-950 should come on with the following
annunciations:
1. NAV or GPS
Momentarily press the TEST Switch, ali annunciations
should light.
Select NAV using the NAV 1 GPS button. The presentation on
the HSI 1 CDI will now be information from the VOR receiver.
Using a
VOR test generator or equivalent VOR signal, verify
that the presentation and operation of the HSI 1 CDI is correct.
This will include course resolver, left-right meter, ta-from mater
and nav warn flag.
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INSTALLATION AND OPERATION MANUAL, MODEL AK-950
GPS 1 NAV SWITCHING & ANNUNCIATOR PANEL
·1 he ILS Override feature (if Pin 63 is connected) may be tested
by tuning the connected NA V Radio to an ILS frequency.
Verify that the Blue GPS Annunciator extinguishes and bath
the Green ILS and NA V Annunciators illuminate, regardless of
tl1e selection of the NA V /GPS switch. Using the appropriate
t:!st signal generators, verity that the ILS and 1 or Glide Slope
data is correctly displayed on the HSI and 1 or CDI.
Tune the connected NA V Radio back to a standard VOR
frequency. Verity that the Blue GPS Annunciator again
illuminates and that the GPS datais then correctly displayed on
the HSI and 1 or CDI.
No periodic maintenance or calibration is necessary for
continued airworthiness of the AK-950.
2.4.2.6 AUTO DIMMING TEST:
A Photocell provides the Auto Dimming function. This can be
tested by covering the Photocell by hand and observing the
change in brightness.
NOTE:
1. There is an Adjustment Potentiometer located on
the side of the unit. Adjustment should be made vvhen the unit
is installed in aircraft, and with night time lighting conditions.
2. Rotate the Potentiometer clockwise to dim the
annunciators. Rotate the Potentiometer counter-clockwise to
make the annunciators brighter.
3. Do not use excessive inward force on the
alignment tool, and do not use excessive rotational force.
Damage may result.
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